Frank Lettiere's eyebrows and eyelashes froze after his walk along Lake Michigan's Chicago shoreline Wednesday. Frostbite warnings were issued for parts of the U.S. Midwest as temperatures plunged.
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Meteorological Electronics Technicians Christopher Bieschke and Kirk Wilson replace a wind sensor atop a 30-foot tower at an Oklahoma Mesonet station near Shawnee, Okla.
Joe Wertz/StateImpact Oklahoma
13-year-old Gitanjali Rao with her lead detection device named Tethys. Rao was named America's top young scientist in 2017 and one of Forbes' 30 under 30 in 2019.
Michael Elizabeth Sakas/CPR News
A wild boar at at an enclosure set up by forest rangers in a northwestern district of Berlin in 2017. Denmark is building a $12 million fence in an effort to keep out wild boars from Germany.
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Almost 10,000 migratory crows have descended on Nampa, Idaho, for the past three winters. A task force is deploying drones, lasers and even a live hawk to try to divert the annual migration.